Ключевые слова: 3d, anatomy, artery, behind, bloating, blood, care, cholesterol, condition, cramps, dilatation, disease, education, fat, flow, flowing, health, healthcare, healthy, human, illness, illustration, insufficiency, itching, laboratory, leg, life, limbs, lower, medical, medicine, pain, phlebitis, pressure, reflux, rendering, schematic, scheme, science, scientific, skin, ugliness, ulcer, valves, varicose, vein, veins, vessel,